Figure 1 shows annual sludge production in Maine for the years from 1995 to
2002.
Annual production ranged between 120,000 and 185,000 cubic yards.
| Year | Total Sludge Produced in Maine (Cubic Yards) |
| 1995 | 126,254 |
| 1996 | 186,191 |
| 1997 | 157,592 |
| 1998 | 169,770 |
| 1999 | 148,331 |
| 2000 | 160,275 |
| 2001 | 150,517 |
| 2002 | 154,923 |